An inter-spike interval (ISI) histogram is constructed based on neural responses to a pure tone. Three peaks are observed on the ISI histogram and they are at 4, 8, and 12 ms. What is the tonal frequency? Ⓒ500 Hz 2000 Hz O1000 Hz 250 H₂
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- An organ pipe that is 1.75 m long and open at both ends produces sound of frequency 303 Hz when resonating in its second overtone. What is the speed of sound in the room? m/s. A small reverberation chamber 8ftx9ft x10ft effective sound absorption coefficient of certain acoustical tile. The observed is employed to measure the reverberation time is 5.0 second, or 1.0 second when 40 ft of acoustical tiles is used to cover part of one wall of the chamber. Find the effective sound absorption coefficient of the tile. sw (0.71)What is your measurement of speed of sound in air in m/s? The number should have three significant digits. Your Answer: Answer units
- The speed of sound in a solid medium is 15 times greater than that in air. If the frequency of a wave in the solid is 61 kHz, then what is the wavelength? (The speed of sound in air is 344 m/s.)Item 9 Learning Goal: To learn the properties of logarithms and how to manipulate them when solving sound problems. The intensity of sound is the power of the sound waves divided by the area on which they are incident. Intensity is measured in watts per square meter, or W/m². The human ear can detect a remarkable range of sound intensities. The quietest sound that we can hear has an intensity of 10-¹2 W/m², and we begin to feel pain when the intensity reaches 1 W/m². Since the intensities that matter to people in everyday life cover a range of 12 orders of magnitude, intensities are usually converted to a logarithmic scale called the sound intensity level 3, which is measured in decibels (dB). For a given sound intensity I, B is found from the equation ß = (10 dB) log (1). where Io = 1.0 × 10-¹2 W/m². Part A What is the value of log(1,000,000)? Express your answer as an integer. ► View Available Hint(s) The logarithm of x, written log(x), tells you the power to which you would raise 10…Problem 9: One day when the speed of sound in air is 343 m/s, a fire truck traveling at vs = 34 m/s has a siren which produces a frequency of fs = 438 Hz.Randomized Variables vS = 34 m/sf = 438 Hz Part (a) What frequency (in Hertz) does the driver of the truck hear?Numeric : A numeric value is expected and not an expression.fd = __________________________________________Part (b) What frequency (in Hertz) does an observer hear when the truck is moving away?Numeric : A numeric value is expected and not an expression.fo = __________________________________________ Problem 10: A student knows that an ambulance siren has a frequency of fs = 395 Hz. He measures, when the ambulance is approaching him, the frequency fo = 416 Hz. Assume the speed of sound is 343 m/s in this problem. Part (a) Input an expression for the ambulance's speed, vs, in terms of the frequencies and the speed of sound v.Expression :vs =…
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- The speed of sound in a solid medium is 15 times greater than that in air. If the frequency of a wave in the solid is 25 kHz, then what is the wavelength? (The speed of sound in air is 344 m/s.)The n vs. f graph below is for a newly discovered material. Please note that the metric prefix "T" represents "tera-", 1 THz = 10¹ Hz. n vs. f GRAPH n 201 1.9 1.8 1.7 1.6 500 600 700 f (THz) 800 In this material, which frequency has the greatest speed? 800 THE In this material, which frequency has the lowest speed?The range of frequencies used for medical applications includes 1,646,125 Hz. What is the wavelength of this frequency in air at a temperature of 20.0°? 2. 入= x 10 m